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| LTC3614_15 Datasheet, PDF (6/30 Pages) Linear Technology – 4A, 4MHz Monolithic Synchronous Step-Down DC/DC Converter | |||
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LTC3614
Typical Performance Characteristics VIN = 3.3V, RT/SYNC = SVIN unless otherwise noted.
Forced Continuous Mode Operation
Load Step Transient in
Pulse-Skipping Mode
Load Step Transient in
Burst Mode Operation
VOUT
20mV/DIV
VOUT
100mV/DIV
VOUT
100mV/DIV
IL
500mA/DIV
ILOAD
2A/DIV
VOUT = 1.8V
IOUT = 100mA
VMODE = 1.5V
1µs/DIV
3614 G10
Load Step Transient in Forced
Continuous Mode without AVP Mode
100µs/DIV
VOUT = 1.8V
ILOAD = 100mA TO 4A, VMODE = 3.3V
COMPENSATION FIGURE 1
3614 G11
Load Step Transient in Forced
Continuous Mode with AVP Mode
ILOAD
2A/DIV
100µs/DIV
VOUT = 1.8V
ILOAD = 100mA TO 4A, VMODE = 0V
COMPENSATION FIGURE 1
3614 G12
Load Step Transient in Forced
Continuous Mode Sourcing and
Sinking Current
VOUT
100mV/DIV
VOUT
100mV/DIV
VOUT
200mV/DIV
ILOAD
2A/DIV
ILOAD
2A/DIV
ILOAD
2A/DIV
100µs/DIV
VOUT = 1.8V
ILOAD = 100mA TO 4A, VMODE = 1.5V
COMPENSATION FIGURE 1
3614 G13
Sinking Current
VOUT
100mV/DIV
100µs/DIV
VOUT = 1.8V
ILOAD = 100mA TO 4A, VMODE = 1.5V
3614 G14
Internal Start-Up in Forced
Continuous Mode
RUN
10V/DIV
PGOOD
10V/DIV
100µs/DIV
VOUT = 1.8V
ILOAD = â3A TO 3A, VMODE = 1.5V
COMPENSATION FIGURE 1
Tracking Up/Down in
Forced Continuous Mode,
Non DDR Mode
VOUT
1V/DIV
SW
2V/DIV
VOUT
500mV/DIV
VTRACK/SS
500mV/DIV
3614 G15
IL
2A/DIV
1µs/DIV
VOUT = 1.8V
IOUT = â3A, VMODE = 1.5V
6
3614 G16
IL
2A/DIV
500µs/DIV
VOUT = 1.8V
IOUT = 0A, VMODE = 1.5V
3614 G17
PGOOD
2V/DIV
2ms/DIV
VOUT = 0V TO 1.8V
IOUT = 3A, VTRACK/SS = 0V TO 0.7V
VMODE = 1.5V, VSRLIM/DDR = 0V
3614 G18
3614fc
For more information www.linear.com/LTC3614
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